266102661 has 16 divisors (see below), whose sum is σ = 387537408. Its totient is φ = 161074800.

The previous prime is 266102659. The next prime is 266102677. The reversal of 266102661 is 166201662.

It is not a de Polignac number, because 266102661 - 2¹ = 266102659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266104661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24726 + ... + 33816.

It is an arithmetic number, because the mean of its divisors is an integer number (24221088).

Almost surely, 2^266102661 is an apocalyptic number.

It is an amenable number.

266102661 is a deficient number, since it is larger than the sum of its proper divisors (121434747).

266102661 is a wasteful number, since it uses less digits than its factorization.

266102661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9992.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 266102661 is about 16312.6534015776. The cubic root of 266102661 is about 643.2054848693.

Subtracting from 266102661 its reverse (166201662), we obtain a palindrome (99900999).

The spelling of 266102661 in words is "two hundred sixty-six million, one hundred two thousand, six hundred sixty-one".